Trinity Catholic College is an independent Roman Catholic co-educational secondary day school, located over two adjacent campuses in the Northern Rivers region, on the northern fringe of Lismore, New South Wales, Australia.

St Mary's College for Girls was founded by the Presentation Sisters in 1886, as a single-sex boarding school, and was merged with the Marist Brothers boys school in 1985 to create Trinity Catholic College.

[1] Brother Peter Pemble, a former principal of the College between 2001 and 2007, was sentenced in 2015 for child sexual abuse crimes against a boy that occurred in the 1970s while Pemble was a teacher at Marist Brothers High School, Maitland.

[2][3][4] In 2017, College Principal, Brother John Hilet, reported to the media that he felt privileged when two FTM transgender students confided in him that they were experiencing gender identity issues and sought to be identified as males.

[6] The college campus was significantly damaged in the 2022 eastern Australia flood.